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  1. Minecraft: Java Edition
  2. MC-160939

Biome borders change when upgrading a world to 1.15

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    • Icon: Bug Bug
    • Resolution: Works As Intended
    • None
    • 19w37a
    • None
    • Confirmed
    • World generation
    • Important

      The bug

      When opening a world from 1.14.4 (or earlier) in 1.15 (since 19w36a), the biome orders change. This is probably a side effect of the Minecraft save files now supporting three-dimensional biomes, and as such probably intentional.

      This is problematic since it breaks farms that are based on only allowing spawning places in a certain biome.

      To reproduce

      1. Create a new world with the seed 5611121500148513396 in 1.14.4
      2. Run /tp @s -1261.5 131 132.5
      3. Turn "Biome Blend" off
      4. Look at the biome borders
      5. Close the world and open it again in 1.15
        → The biome borders change

        1. 1.14.4.png
          1.14.4.png
          4.91 MB
        2. 19w37a.png
          19w37a.png
          4.86 MB

            fry [Mojang] Georgii Gavrichev
            violine1101 [Mod] violine1101
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              Created:
              Updated:
              Resolved:
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